GS1920 Series User’s Guide
268
CHAPTER 31 30
Private VLAN
This chapter shows you how to configure the Switch to prevent communications between
ports in a VLAN.
31.1 Private VLAN Overview
Private VLAN allows you to do port isolation within a VLAN in a simple way. You specify which
port(s) in a VLAN is not isolated by adding it to the promiscuous port list. The Switch automatically
adds other ports in this VLAN to the isolated port list and blocks traffic between the isolated ports.
A promiscuous port can communicate with any port in the same VLAN. An isolated port can
communicate with the promiscuous port(s) only.
Note: You can have up to one private VLAN rule for each VLAN.
Figure 187 Private VLAN Example
Note: Make sure you keep at least one port in the promiscuous port list for a VLAN with
private VLAN enabled. Otherwise, this VLAN is blocked from the whole network.
31.2 Configuring Private VLAN
Click Advanced Application > Private VLAN in the navigation panel to display the screen as
shown.
Isolated ports: 2 ~ 6
Promiscuous port: 10
VLAN 123
2
6
10
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